* Dead peer detection (DPD) is a method that network devices use to verify
the current existence and availability of other peer devices.
* NAT traversal (sometimes abbreviated as NAT-T) is a general term for
techniques that establish and maintain Internet protocol connections
traversing network address translation (NAT) gateways
Signed-off-by: Ting Liu <b28495@freescale.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
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